Humans have been searching the stars for alien radio signals for decades — and so far, E.T. has not phoned home. But that doesn’t mean intelligent life isn’t out there, a new study hints. Rather, ...

Scientists say the findings of the new study may make future searches for extraterrestrial intelligence faster and more effective.

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of an exoplanet in an alien star system. New research suggests that radio emissions from intelligent aliens may be ...

For a world to maintain an atmosphere long enough for life to gain a foothold, it seems it needs to be at least as big as Mars.

The nature of space, time and the evolution of life on Earth mean it’s unlikely extraterrestrial life has visited our home planet.

There is no chance in hell our species will be able to reach another Earth-like planet in the Universe in the foreseeable future, so the only way we can get a sense of the habitability of such places ...

Sagan's team created the greatest puzzle of all time, which you can only solve if your species understands the basic nature of the universe.

But we think all of the really important, essential ingredients are there.” The question remains whether LHS 1140 b is “bare ...